2185525 has 6 divisors (see below), whose sum is σ = 2710082. Its totient is φ = 1748400.

The previous prime is 2185523. The next prime is 2185541. The reversal of 2185525 is 5255812.

It can be written as a sum of positive squares in 3 ways, for example, as 311364 + 1874161 = 558^2 + 1369^2 .

It is not a de Polignac number, because 2185525 - 2¹ = 2185523 is a prime.

It is a Duffinian number.

2185525 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2185493 and 2185502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43686 + ... + 43735.

2^2185525 is an apocalyptic number.

2185525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2185525 is a deficient number, since it is larger than the sum of its proper divisors (524557).

2185525 is an equidigital number, since it uses as much as digits as its factorization.

2185525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87431 (or 87426 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 2185525 is about 1478.3521231425. The cubic root of 2185525 is about 129.7732734464.

The spelling of 2185525 in words is "two million, one hundred eighty-five thousand, five hundred twenty-five".